Example usage for jdk.nashorn.internal.runtime Context createGlobal

List of usage examples for jdk.nashorn.internal.runtime Context createGlobal

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Introduction

In this page you can find the example usage for jdk.nashorn.internal.runtime Context createGlobal.

Prototype

public Global createGlobal()

Source Link

Document

Create and initialize a new global scope object.

Usage

From source file:com.mongodb.jvm.test.TestNashorn.java

License:Apache License

private static void run(String script) {
    PrintWriter out = new PrintWriter(System.out, true);
    PrintWriter err = new PrintWriter(System.err, true);
    Options options = new Options("nashorn", err);
    options.set("print.no.newline", true);
    ErrorManager errors = new ErrorManager(err);
    Context context = new Context(options, errors, out, err, Thread.currentThread().getContextClassLoader());
    ScriptObject globalScope = context.createGlobal();
    Context.setGlobal(globalScope);
    ScriptFunction fn = context.compileScript(Source.sourceFor(TestNashorn.class.getCanonicalName(), script),
            globalScope);/*from  w w w.  ja  v  a 2  s.c o  m*/
    ScriptRuntime.apply(fn, globalScope);
}

From source file:com.siemens.ct.exi.javascript.JStoAST.java

License:Open Source License

public static String getAST(String jsCode) throws IOException, EXIException {
    // http://sites.psu.edu/robertbcolton/2015/07/31/java-8-nashorn-script-engine/
    /*//from  w w  w .ja  v  a 2  s.co m
     * This JSON encoding provided by Nashorn is compliant with the
     * community standard JavaScript JSON AST model popularized by Mozilla.
     * https://developer.mozilla.org/en-US/docs/Mozilla/Projects/
     * SpiderMonkey/Parser_API
     */
    // Additionally the OpenJDK project is developing a public interface for
    // Java 9 that allows AST traversal in a more standard and user friendly
    // way.
    // String code = "function a() { var b = 5; } function c() { }";
    // String sin = "./data//jquery.min.js";
    // String sin = "./data/animals.js";
    // String code = new String(Files.readAllBytes(Paths.get(sin)));

    // ScriptEngine engine = new
    // ScriptEngineManager().getEngineByName("nashorn");
    // engine.eval("print('Hello World!');");
    // load jquery source file
    // engine.eval("load('" +
    // "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js" +
    // "');");
    // engine.eval("load('" + sin + "');");

    Options options = new Options("nashorn");
    options.set("anon.functions", true);
    options.set("parse.only", true);
    options.set("scripting", true);

    ErrorManager errors = new ErrorManager();
    Context contextm = new Context(options, errors, Thread.currentThread().getContextClassLoader());
    Context.setGlobal(contextm.createGlobal());
    String jsonAST = ScriptUtils.parse(jsCode, "<unknown>", false);

    return jsonAST;
}

From source file:io.stallion.plugins.javascript.JavascriptShell.java

License:Open Source License

public int runShell(String[] args) throws IOException, ScriptException {
    OutputStream out = System.out;
    OutputStream err = System.err;
    InputStream in = System.in;

    Context context = makeContext(in, out, err, args);
    Global global = context.createGlobal();
    if (context == null) {
        return 100;
    } else {//from   w  w  w . ja va2s .  c  o  m
        return readEvalPrint(in, out, context, global);
    }
}

From source file:me.finalchild.nashornbukkit.util.BukkitImporter.java

License:MIT License

public static Set<String> getUsedIdentifiers(Path file) throws IOException {
    Set<String> result = new HashSet<>();
    String text = new String(Files.readAllBytes(file), StandardCharsets.UTF_8);
    String json;/*from   w w  w. j a  v a2  s. c o m*/

    Options options = new Options("");
    ErrorManager errorManager = new ErrorManager();
    Context context = new Context(options, errorManager, NashornBukkit.class.getClassLoader());
    Context.setGlobal(context.createGlobal());
    json = ScriptUtils.parse(text, file.getFileName().toString(), false);

    JsonParser jsonParser = new JsonParser();
    JsonObject rootObj = jsonParser.parse(json).getAsJsonObject();

    addUsedIdentifiers(rootObj, result);
    return result;
}

From source file:org.kihara.util.JavascriptEngine.java

License:Open Source License

/**
 * Run method logic./*from   w ww . java  2s. c om*/
 *
 * @param in input stream for Shell
 * @param out output stream for Shell
 * @param err error stream for Shell
 *
 * @return exit code
 *
 * @throws IOException if there's a problem setting up the streams
 */
protected final int run(final InputStream in, final OutputStream out, final OutputStream err)
        throws IOException {
    final Context context = makeContext(in, out, err);
    if (context == null) {
        return COMMANDLINE_ERROR;
    }

    final ScriptObject global = context.createGlobal();
    final ScriptEnvironment env = context.getEnv();
    final List<String> files = env.getFiles();

    // Prepare bindings here.
    SimpleScriptContext scriptContext = new SimpleScriptContext();
    ScriptObjectMirror mirror = (ScriptObjectMirror) ScriptObjectMirror.wrap(global, global);
    scriptContext.setBindings(mirror, ScriptContext.ENGINE_SCOPE);
    bindings.accept(scriptContext.getBindings(ScriptContext.ENGINE_SCOPE));

    // TODO: JDK 1.8u65 method only. Will invoke old call if fails.
    try {
        Global g = ((Global) global);
        ScriptEngine s = new ScriptEngineManager().getEngineByName("nashorn");

        try {
            Method m = Global.class.getMethod("initBuiltinObjects", ScriptEngine.class, ScriptContext.class);
            m.invoke(g, s, scriptContext);
        } catch (NoSuchMethodException e) {
            try {
                Method m = Global.class.getMethod("initBuiltinObjects", ScriptEngine.class);
                m.invoke(g, s);
                g.setScriptContext(scriptContext);
            } catch (NoSuchMethodException ee) {
                System.err.println("COULD NOT INIT!");
                throw new IOException("COULD NOT INIT!");
            }
        }
    } catch (Exception ignored) {
    }

    if (files.isEmpty()) {
        return readEvalPrint(context, global);
    }

    if (env._compile_only) {
        return compileScripts(context, global, files);
    }

    if (env._fx) {
        return runFXScripts(context, global, files);
    }

    return runScripts(context, global, files);
}

From source file:z.zee.Z.java

License:Open Source License

/**
 * Run method logic.//  w w w .  jav  a 2 s.  c om
 *
 * @param in input stream for Z
 * @param out output stream for Z
 * @param err error stream for Z
 * @param args arguments to Z
 *
 * @return exit code
 *
 * @throws IOException if there's a problem setting up the streams
 */
protected final int run(final InputStream in, final OutputStream out, final OutputStream err,
        final String[] args) throws IOException {
    final Context context = makeContext(in, out, err, args);
    if (context == null) {
        return COMMANDLINE_ERROR;
    }

    final ScriptObject global = context.createGlobal();
    final ScriptEnvironment env = context.getEnv();
    final List<String> files = env.getFiles();

    if (env.getArguments().isEmpty() && !scripting) {
        context.getErr().println(bundle.getString("shell.usage"));
        return COMPILATION_ERROR;
    }

    if (files.isEmpty()) {
        return readEvalPrint(context, global);
    }

    if (env._compile_only) {
        return compileScripts(context, global, files);
    }

    return runScripts(context, global, files);
}